A Microsoft file hosting and synchronization service.
Dear Omar,
Besides what Vincent provides, you can also refer to the detailed information in Microsoft 365 Education updates - Microsoft Community Hub.
Users of Office 365 A1 (free SKU) will be limited to a maximum of 100GB for OneDrive storage, within the 100TB of pooled storage for the institution. Customers will have the option to purchase incremental storage based on needs.
If you need further help on buying more storage and if you aren't the administrator, I suggest you contact the administrator in your tenant and let him let him follow the steps in Get support - Microsoft 365 admin | Microsoft Learn to open a support ticket to our related team as soon as possible.
About admin roles in the Microsoft 365 admin center - Microsoft 365 admin | Microsoft Learn
How do I find my Microsoft 365 admin? - Microsoft Support
Here is another article for your reference.
Program Updates in Microsoft 365 for Education - Microsoft Community Hub
@Vincent, thanks for sharing the information here.
Thank you for your effort and time.
Sincerely
Cliff | Microsoft Community Moderator